Private Hugh H. Allen was assigned to the 780th Amphibious Tank Battlion. At the time of his death the Battalion was involved in the assault on Okinawa. He died on 9 April 1945 and is listed on the Tablets of the Missing Memorial, Honolulu, Hawaii.
- Rank: Private
- Date of death: 9 April 1945
- County: Sevier
- Service Branch: Army/Army Air Forces
- Division/Assignment: 780th Amphibious Tank Battlion
- Theater: Pacific
- Conflict: World War II
- Battles: Okinawa
- Awards: Purple Heart
- Burial/Memorial Location: Honolulu Memorial, Honolulu, Hawaii
- Location In Memorial: Pillar XVII, Bottom Panel
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